If the positive/negative gain isn't an issue, couldn't you just route
the audio thru an A132 VCA and get voltage control of the gain that
way

--- In Doepfer_a100@yahoogroups.com , "Tim Stinchcombe" <timothy@t...>
wrote:

> Hi Ethan,
>
> > I own an A136 and have been using it more lately and it occured to
> me
> > that the most radical timbre changes are caued by turning the

center

> > "A" knob. Does anybody know why this feature is not voltage
> > controllable Also, is there a simple mod to add a "CV in" to the
> A136
> > "A" knob
>
> As you turn the 'A' knob, not only do you alter the gain, but at

it's

> centre point, the gain actually changes sign. Whilst this is
> relatively easy to do with the pot and op amp configuration used in
> the module, doing it with voltage control (especially the changing
> sign bit) is probably a considerably more complicated proposition
> altogether. Thus from what I know of the module, and with my
> understanding, I think a 'simple' mod is probably not possible.
>
> Tim
>
> (... and hopefully this time I won't change my mind 2 seconds after
> hitting the send button...)